Calk device



June 13, 1939. H M` PIERCE ET AL 2,161,883

CALK DEVIGFI Filed June 13. 1938 INVENTORS Hon/AED lW. P/Eecf `/aw H. HEB/naam www ATTORNE Patented June 13, 1939 UNITED vSTATES CALK DEVICE Howard M. Pierce and John H. Hermsen, Brooklyn, N. Y., assignors to A. G. Spalding & Bros., New York, N. Y., a corporation of New Jersey Application June 13, 1938, Serial No. 213,428

.12 claims.

vice which may be easily applied to a shoe sole.

it heretofore has been proposed to form a calk device comprising an internally threaded bushing insertable in an aperture in a shoe sole and in which the threaded stem of a calk or cleat is screwed.

It is an object of the present invention to provide a calk device which includes a gripping means for preventing an inadvertent unscrewing of the calk. v

In achieving the above object there is provided as a feature of the invention a calk detice including a novel internally threaded tubular insert for the sole, having a single means which not only serves to overlap and grip' the underside of the shoe sole but also serves .to grip the,base of the calk so" as to maintain the calka'gainst inad-t vertent unscrewing.

, Another feature of the invention resides in forming the internally threaded insert with iingers which are clinched over to grip the underside of the sole and which are formed to provide gripping teeth for engaging the calk and holding the same against inadvertent unscrewing.

VA complementa] feature to the above resides in providing a bushing insertable on the internally threaded tubular member which serves to facilitate a proper clinching of the vradial gripping fin- 'gers and serves also to more securely maintain the fingers in clinched position.

Other objects and features will hereinafter appear.

In the drawing: Figure 1 is an exploded view showing the various elements of the calk device before association with the shoe sole, a portion of the insert member being broken away to enable a clearer illustration.

Fig. 2 is a sectional view showing the calk device in operative association with the shoe sole. Fig. 3 is a view looking toward the underside of 50 the shoe sole, showing the novel calk-holding insert of the device in operative position, prior to the application of the calk. l Fig. 4 is a view showing the base of the calk. Fig. J5 is a view similar to Fig. ibut showing a `55 moaineafomi ofacalk.

Before describing the present improvements and mode of operation thereof inl detail it should be understood that the invention is not limited to the details of construction and arrangement of parts shown in the accompanying drawing, which are merely illustrative of the present preferred embodiments, since the invention is capable of y other embodiments, and the vphraseology employed is for the purpose of description and not of limitation.

` Referring more particularly to the drawing and rst to Figs. 1 through 4, there is shown a section of a shoe sole II) of conventional construction, having an inner layer III and an outer layer I2, and having a usual calk-device-receiving aperture I3 formed therein.

The calk device I4 provided by the present invention includes a calk or cleat I5 which may be formed of hard rubber or any other suitable inaterial. As shown, this calk is of generally frustoconical shape and has a base I6 from which extends, in a well-known manner, a screw-threaded stem I1.

To secure the calk I5 to the sole there is provided a novel insert member I8 having a main tubular section I9 with sc'rew threads 20 formed -interiorly thereof, and terminating at one end in aplurality of radially extending clinched gripping lingers 2| which, when the main section I9 is inserted in the aperture I3, overlap the bottom or underside 22 of the shoe sole I2. Of particular importance, and as shown most clearly in Figs..2 and 3, certain of these fingers are laterally inclined to provide raised portions 23 extending longitudinally of the fingers and constituting gripping teeth 24 adapted to engage and bite into the base I6 of the calk I5 to hold the latter securely against inadvertent unscrewing when drawn toward the sole by the cooperation vof the threaded stem I1 and the internally threaded tubular insert I8. Preferably, as shown in Fig. 3, alternate radially extending lingers 2| are thus laterally inclined to provide the calk-gripping teeth 24 and all of the radially extending fingers are formed at their free ends with portions 25 turned so as to gripand bite into the underside 22 of the sole. Thus, the radially extending fingers 2I provide a single meansv for not only gripping the sole and thus securely holding the insert I8 relative thereto, but also for gripping the calk I5 and holding the same against inadvertent unscrewing.

To facilitate the proper clinching of the radially extending fingers 2I and to more securely. ,maintain them in clinched position, thereis advantagecusly provided a bushing 2l having a tubular main section-21 and an annular ilange 28, which is placed on the internally threaded insert member Il so that the flange 2l overlaps the underside 22 of the sole adjacent the aperture Il. and underlies the radially extending iingers 2|. T'he sole-gripping portions 2l of the fingers 2i are' bent over the peripheral edge of of the main threaded section 20. It is from this continuing section 3l of the'insert that -the radially extending ilngers 2| are formed.

When it is desired to associate the calk device Il with the shoe sole, the `insert member Il, in the form shown in Fig. 1, is placed in the aperture Il so that the ilange 20 rests on the upper side ll of the sole Il andthe continuing section ll projects outwardly from the -underside 22 of the sole i2. The hanged bushing 2| is then placed on the continuing section of the insert member and pushed inwardly'to rest upon the sole. Then by means of a suitable tool the continuing section is concurrently. scored or lanced longitudinally to denne the gripping ilngers 2| and the ilngers clinched'downwardly to assume the conngurations'shown in Figs. 2 and 3.

' While the scoring or lancing and the clinching of 'the gripping ilngers 2l are described above as being performed concurrently, it will be readily appreciated that the scoring or lancing operation may be performed either prior to or after the placing of the insert in the aperture Il, and the clinching of the iingers performed subsequently as a separate operation.

Whether' or not theclinching operation be performed concurrently with or submuent to the scoring or lancing operation, the bushing 26 serves to so confine and support the insert that the bending or clinching of the gripping ngers will not split the threaded section, and serves also to provide a means whereby the clinched fingers will be so bent as to be securely maintained in clinched position.. Also, the ilanged bushing 2| serves to provide a means for facilitating the formation of the sole-gripping portions 2i at the free ends of the radially extending lingers 2i.

Preferably,4 and as shown. a plurality of cir- `cumferentially spaced projections 32 are formed on the flange 2i of the insert to grip and bite into the upperside III of the sole and thus prevent adverseturning of the insert i8 relative to l the sole.

Complementing the projections 32 in preventing adverse turning of the-insert Il, there-may be providedalso a' plurality of ribs Il extending longitudinally oi' the insert il from the flange 2! and terminating short of the extremity 'fof the main threaded section. In addition to serving as a .means to prevent adverse turning ofthe insert relative to the sole il, these ribs `ltprovide Il which support bushing "and thusian'est'longitudinal movement of the 'L latter on theinsert II during theclinching op- I eration.

To complete the association ofv calk device withuthe shoe sole, the threaded stem I1 is 'L scregedintothethreadedinserttodrawthe base'ilo! the calk nrmly against the gripping As shown"inost clearly in Fig. 2.- a central revthe outer peripheral portion Il thereof ynot only will the teeth- 24 bite into that portion,

of the base I6 constituting the bottom 3i of the l recess, but also the peripheral outer portion 31 ofthe base will beheld rmly against the underside 22 of the sole.

With the novel call: device I4 provided by the present invention, therefore, the insert i8 is securely held relative to the sole by the ange 2l and the radially extending gripping fingers 2| and these latter lingers in addition to serving as means for securing the insert i8 to the sole serve also as a means for gripping and holding the calk I5 against inadvertent vunscrewing. Also, of importance, the lateral bending and inclination of certain of the radially extending fingers to form the calk-gripping teeth 2|,provides in eifect spring sections ..23 which "when compressed vby the calk serve to press on the base I l of the calk and thus supplement the biting action of the teeth 24 in maintaining the calkagainst inadvertent unscrewing.

It is thus seen that the present .invention provides a novel calk device Il which is simple in construction, which is designed to be easily applied, and which when associated with the shoe sole is securely locked in place.

As shown in Fig. 5, a modified calk IIa may be utilized. It is of substantially-the same construction as the calk i5 rst described, having a threaded stem Il projecting from the base I.. Also as in the calk Il, the modied calk Ila has a central recess 35a formed in the base so thatv uw be drawn tightly against the shoe sole.

However, and of importance, there are formed on the bottom 38a of the recess 35a in the base I6, a plurality of radially extending. ribs ,3l adapted to cooperate with 'the gripping teeth 24 in further securing the calk against inadvertent unscrewing. While in describing the preferred embodiments of the invention only .one calk device has ubeen 45 shown as attached to a shoe sole, it will be api preciated that any number of such devices mayv be used and may be spaced in any desired manner.

Variations and modiilcations may be made within the scope of this invention, and portions of the improvements may be used without others.

Having thusl described the invention what is claimed as new is:

1. An insert for securing a calk to a shoe sole. comprising a tubular member insertable in an aperture in a shoe sole, having internal threads cooperable with a complementary threaded means for drawing a calk toward said suie;v and a single means on said tubular member for gripping said sole, and for gripping and 'holding said calk against inadvertent unscrewing.

2. An insert for securing a calk to'a shoe sole, comprising a tubular member insertable in an aperture in a shoe sole, having internalthreads cooperable with a complementary threaded means for drawing a calk toward saidscle; and a plurality of radilally extendingfingers on said tubular member, formed to overlap and grip said sole and to grip and hold said calk against inadvertent 7o unscrewing.

3. An insert for securing a calk to a shoe sole, comprising a tubular member insertable in an aperture in a shoe sole, having internal threads cooperable with a complementary threaded 7g means for drawing a calk toward said sole; a

- bushing on said threaded tubular member; and

a single means on said threaded tubular member for holding the bushing in place and gripping said sole, and for gripping and. holding said calk against an inadvertent unscrewing.

4. A calk device, comprising an internally threaded tubular member insertable in an aperture in a shoe sole; flange means on said tubular member at one end thereof; a calk having a threaded stem screwed in said tubular member; and a single means on said tubular member, co v operable with said nange means to secure vsaid tubular member to said'sole, and engageable with said calk to grip and hold the latter against inadvertent unscrewing.v

5. A calk device, comprising an internally threaded tubular member insertable in an aperture in a shoe sole; a calk having a threaded stem screwed into said tubular member; and a single means on said tubular member having portions for gripping said sole to hold the member against inadvertent rotation relative toa the sole, and having projections for gripping and holding said calk against inadvertent unscrewing.

6. A calk device, comprising an internally threaded tubular member insertable in an aperture in a shoe sole; a calk having a threaded stem screwed into said tubular member; a plurality of radially extending fingers on said tubular member and adapted to overlap the underside of said sole, at least one of said fingers having a projecting portion engageable with said calk to grip and hold the same against inadvertent unscrewing. y

7. A calk device, comprising an internally threaded tubular member insertable in an aperture in a shoe sole; a calk having a threaded stem screwed into said tubular member; a bushing on said tubular member; and a plurality of radially extending fingers on said tubular member, clinched over said bushing, at least one of said iingers having a portion formed to bite into said sole andat least one of said lingers being laterally inclined to provide a longtudinal edge engageable with said calk to grip and hold the same against inadvertent unscrewing.

8. In a calk device, comprising an internally threaded tubular member insertable in an aperture in a shoe sole; a calk having a threaded stem screwed into said tubular member; means on said tubular member for engaging said sole to maintain the member against rotation relative thereto; and a plurality of radially extending ngers on said tubular member, adapted to lap the underside of said sole, at least one of said iingers being formed to provide a gripping tooth for engaging said calk and holding the same against inadvertent unscrewing.

9. A calk device, comprising an internally threaded tubular member insertable in an aperture in a shoe sole; a calk having a threaded stem screwed into said tubular member; a bushing on said tubular member; a plurality of radially extending nngers on said tubular member, clinched over said bushing, at least one oi' said lingers being laterally inclined to provide a longitudinal edge engageable with said calk to grip and hold the same against inadvertent unscrewing; and means on said tubular member for arresting longitudinal movement oi.' said bushing thereon and into said sole when the radially extending fingers are clinched.

10. A calk device, comprising an internally threaded tubular member insertable in an aperture in a shoe sole; a calk having a threaded stem screwed into said tubular member; projecting means on the base of said calk: and a single means on said tubular member having portions for gripping said sole to hold the member against inadvertent rotation relative to the sole, and having projections for engaging said projecting means on said calk to grip and hold the latter against inadvertent unscrewing.

l1. A calk device, comprising an internally threaded tubular member insertable in an aper'- ture in a shoe sole; a calk having a threaded stem screwed into said tubular member, said calk having a recess in the base thereof and encircling said threaded stem; and a plurality of radially extending iingers on said tubular member, p ositioned in said recess and adapted to overlap the underside of said sole, at least one of said ngers having a projecting portion engageable with said calk to grip and hold the same against inadvertent unscrewing.

grip and hold the same against inadvertent lunscrewing, and having a portion formed to bite into said sole.

HOWARD M. PIERCE. JOHN H. HERMSON. 

